FUEL GAUGING SYSTEMAT CORRECTION BY DIELECTRIC PERMEABILITY AND HEAT CONDUCTIVITY

摘要

FIELD: aircraft instrumentation engineering; check of fuel mass in each fuel tank and total mass. SUBSTANCE: present parameters of fuel level, temperature, heat conductivity and dielectric permeability are determined by means of sensors mounted in aircraft fuel tanks and characteristic parameter transducers. Level of fuel is measured in at least three points not lying on one straight line. Volume of fuel in tank is determined in on-board computer by its level with geometric characteristics of tank taken into account. Grade of fuel or ratio of grades is determined in on-board computer by characteristic parameters and temperature of fuel. Density of fuel in tank is determined in fuel parameter driver included in on-board computer by grade or ratio of grades. Mass of fuel in tank is determined in on-board computer by its density and volume determined in on-board computer beforehand. Mass of fuel is found in summing-up unit. EFFECT: enhanced accuracy of determination of fuel mass at spread of temperatures and grades. 1 dwg, 2 tbl